From: Samir Benmendil <me@rmz.io>
Date: Sat, 13 Jan 2018 22:41:38 +0000 (+0000)
Subject: Define a parser for various symbols in Scheme
X-Git-Url: https://git.rmz.io/my-scheme.git/commitdiff_plain/f842fb4a461de09bae23b67773611ba08cd21885?ds=sidebyside

Define a parser for various symbols in Scheme

`symbol :: Parser Char` is probably not needed (?)

I don't understand where the `Parser` type comes from, I cannot see it
in the doc of `Text.ParserCombinators.Parsec`. It may be that
`ParserCombinators` is a compatibility layer and that `Parser` is
defined somewhere else.

`oneOf` is provided by Parsec.
---

diff --git a/app/Main.hs b/app/Main.hs
index 2740935..015db3a 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -2,6 +2,9 @@ module Main where
 import Text.ParserCombinators.Parsec
 import System.Environment
 
+symbol :: Parser Char
+symbol = oneOf "!#$%&|*+-/:<=>?@^_~"
+
 main :: IO ()
 main = do
     args <- getLine